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diff --git a/slideshow/source/engine/slide/userpaintoverlay.hxx b/slideshow/source/engine/slide/userpaintoverlay.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_SLIDESHOW_SOURCE_ENGINE_SLIDE_USERPAINTOVERLAY_HXX
+#define INCLUDED_SLIDESHOW_SOURCE_ENGINE_SLIDE_USERPAINTOVERLAY_HXX
+
+#include <cppcanvas/canvasgraphic.hxx>
+
+#include <rgbcolor.hxx>
+
+#include <memory>
+#include <vector>
+
+/* Definition of UserPaintOverlay class */
+
+namespace slideshow::internal
+    {
+        class EventMultiplexer;
+        struct SlideShowContext;
+
+        class PaintOverlayHandler;
+        typedef ::std::shared_ptr< class UserPaintOverlay > UserPaintOverlaySharedPtr;
+        typedef ::std::vector< ::cppcanvas::PolyPolygonSharedPtr> PolyPolygonVector;
+        /** Slide overlay, which can be painted into by the user.
+
+            This class registers itself at the EventMultiplexer,
+            listening for mouse clicks and moves. When the mouse is
+            dragged, a hand sketching in the selected color is shown.
+        */
+        class UserPaintOverlay
+        {
+        public:
+            /** Create a UserPaintOverlay
+
+                @param rStrokeColor
+                Color to use for drawing
+
+                @param nStrokeWidth
+                Width of the stroked path
+             */
+            static UserPaintOverlaySharedPtr create( const RGBColor&          rStrokeColor,
+                                                     double                   nStrokeWidth,
+                                                     const SlideShowContext&  rContext,
+                                                     PolyPolygonVector&&      rPolygons,
+                                                     bool                     bActive);
+            ~UserPaintOverlay();
+            UserPaintOverlay(const UserPaintOverlay&) = delete;
+            UserPaintOverlay& operator=(const UserPaintOverlay&) = delete;
+            PolyPolygonVector const & getPolygons() const;
+            void drawPolygons();
+
+        private:
+            UserPaintOverlay( const RGBColor&          rStrokeColor,
+                              double                   nStrokeWidth,
+                              const SlideShowContext&  rContext,
+                              PolyPolygonVector&&     rPolygons,
+                              bool                    bActive );
+
+            ::std::shared_ptr<PaintOverlayHandler>    mpHandler;
+            EventMultiplexer&                           mrMultiplexer;
+        };
+
+}
+
+#endif // INCLUDED_SLIDESHOW_SOURCE_ENGINE_SLIDE_USERPAINTOVERLAY_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */